The Universal Rocks Crevice 3D Background is available in various sizes. This is an extremely detailed background that doesn’t take up too much aquarium space. The Universal Rocks crevice background is molded from basalt. You will be impressed with its look. The Crevice background is about 2-3" thick from back to front.

Measurements for your background come from the inside of your tank. Remember leave a little room so the background does not bunch up.